Improvement in rock-drilling machines



D. w. BRICKER.

improvement in Rock-Drilling Machines.

Patented Aug. 13,1872.

Witnesses PATENT CDEEICE.

DAVID w. BEIcEEE, 0E CLAY Lick, PENNSYLVANIA.

IMPROVEMENT IN ROCK-DRILLING MACHINES.

Specification forming part of Letters Patent No. 130,471, dated August13, 1872.

To all whom it may concern:

Be it known that I, DAviD W. BRIGEER, of Clay Lick, in the county ofFranklin and in the State of Pennsylvania, have invented certain new anduseful Improvements in Stone- Drilling Machine; and do hereby declarethat the following is a full, clear, and exact description thereof,reference being had to the accompanying drawing and to the letters ofreference marked thereon making a part of this specification. 4

The nature of my invention consists in the construction and arrangementof a stonedrilling machine, as will be hereinafter more fully set forth.A

In order to enable others skilled in the art to which my inventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation, referring to the annexed drawing, in which-Figure lis a front elevation, and Fig. 2 a

side view, of my machine. Fig. 3 is an en larged view of the drilLshaftwith devices attached to the same, and Fig. 4. is a section of theframe. D

A A represent two standards, each having a suitable foot or bed piece,and the two bedpieces connected `bv a cross-bar. In the upper ends ofthe standards A A is pivoted a frame, B, consisting merely of two sidepieces` and atop bar, the.frame being open at the lower end. The twoside pieces of the frame B are grooved longitudinally on their innersides, and in the same moves a gate or frame,

C, this frame having tenons a on .their sides fitting in the grooves inthe side pieces of the frame B. Through holes in the top and bottom barsof the frame C passes a sleeve, D, provided with a circumferentialflange, b, at its upper end to prevent it from passing down through theframe, and wings i t pass downward from said flange through grooves inthe top bar of the frame C to-prevent the sleeve from turning, but stillallow it to move up r and down. The interior 'of the sleeve D is 4running through a hole in the top bar of the swinging frame B. Throughthe side of this sleeve H is passed a set-screw, d, which goes into agroove, e, running lengthwise of the shaft E for a suitable distance. Atthe upper end of the sleeve H is a hand-wheel, I, by means of which thesleeve is turned to feed the drill-shaft up or down through the sleeve Dby means of the screw d entering the groove e, while these parts allowthe shaft to move up and down without moving the sleeve or wheel. At theupper end of the swinging frame B, on one side, is an additional frame,B', within which is placed a large cog- Wheel, J, turned by a crank, K,attached to the outer end of its shaft. This oog-wheel J gears with apinion, f, upon the end of a crank-shaft, L, having its bearings inboxes upon the swinging frame, and provided on its other end with aily-wheel, M. The crankshaft L is, by a pitman, N, connected with thesliding frame or gate G, and thus the same, with the drill, obtains arapid reciprocating motion. Around the sleeve D is placed a'spiralspring, h, the ends of which bear against the top bar of the frame O anda collar or shoulder, s, on the sleeve. The object of this spring is tocause the drill to give a yielding blow and prevent the breaking of anypart of the machine by the concussion.

The drilling may be done at any angle desired by adjusting the swingingframe B between two curved arms, P P, projecting forward from thestandards A A, and holding said frame between them vat any point byscrews m m. The swinging frame is also supported by pivot-ed braces R R.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. AThe hollow screw-sleeve D, provided with iiange b, wings t' t', andshoulder s, in combination with the spring hand screw drillshaft E,substantially as and for the purposes herein set forth.

2. The combination of the posts A A, swinging frame B, curved arms P P,set-screws m m, sliding frame C carrying the drill-shaft E, crank K,gears J f, crank-shaft L, and pitman N, all constructed and arrangedsubstantially as and for the purposes herein set forth.

3. Incombinationwith the adjustableswing- In testimony that I claim theforegoing I ing frameB and sliding or reciprocating frame have hereuntoset my hand this 9th davy of C, operated by the means herein described,May, 1872.

the drill-shaft E, screw-sleeve D, spring h, DAVID W. BRICHER. sleeve H,and hand-wheel I, all constructed Witnesses:

a-nd arranged substantially as and for the pur- J oHN SMITH,

poses herein set forth. PATTERSON BRUBAKER.

